I'm assuming it would probably be either an S or an M but I don't really know what would be better. She's sort of petite but not super petite. I was thinking that some girls here might know either from their own bodies or from shopping clothes with friends.
Most Helpful Girl
What's the brand?
See if you can find similar items used on a site like Vinted, Tradesy, Threadflip, Poshmark, or eBay.
On any of those sites except eBay, the sellers are probably the original wearers. Just message them and ask them for their height and weight (this is not rude or awkward -- it's a perfectly normal thing to do on these kinds of sites).
On eBay, you can ask for the original wearer's ht/wt if available -- or, if not, the seller will probably be willing to take measurements of the garment (which you can then compare to yr girl's other stuff).
Is this a Neiman Marcus store brand, by any chance? Or something like Bagatelle?0
Most Helpful Guy
i think that M0